Movable Compensation Guide for Elevator Counterweight Collision Prevention
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Solution Overview
Problem
Existing compensation guides for traction elevators in high-rise buildings are inefficient as they can cause collisions between the counterweight and the guide, requiring redundant vertical clearance, limiting design flexibility and increasing costs.
Innovation Solution
A dynamically movable compensation guide mounted to a counterweight screen at the elevator shaft's pit, allowing vertical movement to support the compensation element during normal operation and buffer strikes, eliminating the need for additional buffers and support structures, and enabling more versatile material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed compensation guide is mounted below the counterweight, then the compensation element is supported during normal operation, but the counterweight may collide with the guide during buffer strikes, requiring redundant vertical clearance
Solution Approach 1:
The compensation guide is made dynamically movable in the vertical direction through bearing elements that allow it to follow the compensation element during buffer strikes. This dynamic capability eliminates the need for fixed positioning and redundant clearance space, as the guide adapts its position to prevent collision while maintaining support functionality.
Solution Approach 2:
The compensation guide acts as an intermediary between the counterweight and the compensation element. By positioning the guide on the counterweight screen rather than directly below the counterweight, it mediates the interaction and prevents direct collision, allowing the counterweight to strike the buffer without damaging the guide.
2Reliability
If redundant vertical clearance is reserved to prevent collision, then counterweight-guide collision is avoided, but the counterweight frame height is reduced and design flexibility is limited
Solution Approach 1:
The movable compensation guide enables the system to achieve collision prevention without sacrificing design flexibility. The guide's ability to move vertically allows the counterweight frame to be designed with optimal height for various applications, including different counterweight materials like plates or tanks, without being constrained by fixed clearance requirements.
3Reliability
If special buffers and support structures are designed to accommodate the guide, then collision is prevented, but the structure becomes more complex and expensive
Solution Approach 1:
The compensation guide is extracted from the buffer system and mounted independently on the counterweight screen. This separation allows the use of simple, standard buffers without complex integrated support structures, reducing overall system complexity and cost while maintaining collision prevention capabilities.
4Reliability
If the compensation guide is mounted to move with the compensation element, then proper support is maintained during buffer strikes, but the guide structure becomes more complex
Solution Approach 1:
The guide structure incorporates simple bearing elements that enable vertical movement without adding significant complexity. These bearing elements allow the guide to follow the compensation element's motion during buffer strikes, maintaining proper support while keeping the overall structure simple and cost-effective.
Data Source
AI summary
A compensation guide, counterweight screen, traction elevator and method for guiding a compensation element are disclosed. The compensation guide includes a horizontally directed guide opening through which the compensation guide passes. The guide is mounted vertically movably to the counterweight screen.